//
//  MainTabBar.swift
//  weibo
//
//  Created by sanya on 15/6/23.
//  Copyright © 2015年 sanya. All rights reserved.
//

import UIKit

class MainTabBar: UITabBar {
    private let buttonCount = 5
    
    override func layoutSubviews() {
        super.layoutSubviews()
        let w = bounds.width / CGFloat(buttonCount)
        let rect = CGRectMake(0, 0, w, bounds.height)
        var index = 0
        for v in subviews{
            if v is UIControl && !(v is UIButton){
                v.frame = CGRectOffset(rect, CGFloat(index)*w, 0)
                index += index == 1 ? 2:1
                
            }
        }
        composeButton.frame = CGRectOffset(rect, 2*w, 0)
        
    }

    // 懒加载
    lazy var composeButton:UIButton = {
        var btn = UIButton()
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: UIControlState.Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: UIControlState.Highlighted)
        
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: UIControlState.Normal)
        
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: UIControlState.Highlighted)
        
        self.addSubview(btn)
        
        return btn
    }()

}
